Except for the fact that Skeleton Crew takes place during the same time period as The Mandalorian and Ahsoka and stars Jude Law as the main lead, we do not know much about it.
Lucasfilm has yet to unveil even concept art for Skeleton Crew, only to give fans an idea of what they should be anticipating, but based on the breadcrumbs laid down here and there, we know the show will take place in the New Republic period shortly before the sequel trilogy's events, thus creating the very Skeleton Crew which the title refers to.
Jon Watts, the director of Spider-Man: No Way Home, is perhaps more exciting to include Jude Law as the project's primary creative force. Jon Favreau and Dave Filoni are also involved, but Skeleton Crew will be mostly Watts' ship.
Skeleton Crew will be similar to Andor, according to Favreau in an interview with Variety, in that it tries to accomplish something entirely different from what you've typically encountered in the Star Wars universe.
When it comes to the story's main plots, such as the Jedi-Sith conflict, as well as the Skywalker family's drama, projects like Skeleton Crew and Andor are a well-liked change of pace, and we can't wait to see more of the former when it premieres sometime in 2023.